HI!

Created 2 node setup with oVirt 3.4 and CentOS 6.5, for storage created 2 node replicated gluster (3.5) fs on same hosts with oVirt.
mount looks like this:
127.0.0.1:/gluster01 on /rhev/data-center/mnt/glusterSD/127.0.0.1:_gluster01 type fuse.glusterfs (rw,default_permissions,allow_other,max_read=131072)

when i making gluster test with dd, something like
dd if=/dev/zero bs=1M count=20000 of=/rhev/data-center/mnt/glusterSD/127.0.0.1\:_gluster01/kaka
i'm gettting speed ~ 110 MB/s, so this is 1Gbps speed of ethernet adapter

but with in VM created in oVirt speed is lower than 20 MB/s

why there is so huge difference?
how can improve VMs disks speed?